Mercury Outboard Engine Speed

The table below shows the optimal operating speed, known as the optimal operating range of your Mercury outboard engine.

OPTIMAL SPEED MERCURY OUTBOARD ENGINE
Engine power	Optimal full throttle rpm (min-max)	Drive ratio
2.5 HP	4000-5000	1.85
3.3 HP	4500-5500	2.15
4 HP	4500-5500	2.15
4 4T HP	4500-5500	2.15
5 HP	4000-5000	2.15
5 4T HP	4500-5500	2.15
6 HP	4000-5000	2
6 HP 4-Stroke	5000-6000	2.15
8 HP	4500-5500	2
9.9 HP	5000-6000	2
9.9 HP 4-Stroke	4500-5500	2.01
9.9 HP Big Foot	4500-5500	2.42
9.9 HP Saltwater	4500-5500	2.42
15 HP	5000-6000	2
15 HP 4-Stroke	4500-5500	2
15 HP Big Foot	4500-5500	2.42
20 HP	4500-5500	2.25
25 HP Classic	5000-6000	2.25
25 HP Big Foot	5500-6000	2.4
30 HP	4500-5500	2
30 HP 4-Stroke	5500-6000	2
40 HP Classic	4500-5500	2
40 HP Classic	5000-5500	1.83
40 HP 4-Stroke	5500-6000	2
40 HP Big Foot	5500-6000	2
50 HP 4-Stroke	5500-6000	1.83
50 HP Big Foot	5500-6000	2.3
60 HP Classic	5000-5500	1.64
60 HP Big Foot	5000-5500	2.3
60 HP 4-Stroke	5500-6000	1.83
60 HP Big Foot	5500-6000	2.3
75 HP Classic	4750-5250	2.3
75 HP 4-Stroke	5000-6000	2.3
90 HP Classic	5000-5500	2.3
90 HP Saltwater	5000-5500	2.3
90 HP 4-Stroke	5000-6000	2.3
90 HP 4-Stroke Saltwater	5000-6000	2.3
115 HP	4750-5250	2.07
115 HP 4-Stroke	5000-6000	2.07
115 HP 4-Stroke Saltwater	5000-6000	2.07
125 HP Classic	4750-5250	2.07
125 HP Saltwater	4750-5250	2.07
135 HP Optimax	5000-5600	2
135 HP Saltwater Optimax	5000-5600	2
135 HP Verado	5200-6400	2.08
150 HP XR6	5000-5600	1.87
150 HP Saltwater	5000-5600	1.87
150 HP EFI	5000-5600	1.87
150 HP Saltwater EFI	5000-5600	1.87
150 HP Optimax	5000-5600	1.87
150 HP Verado	5800-6400	2.08
175 HP EFI	5000-5600	1.87
175 HP Optimax	5250-5750	1.87
175 HP Verado	5800-6400	2.08
200 HP Classic	5000-5600	1.87

Information given for reference purposes only. Do not hesitate to consult the manufacturer's website or your dealer.

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Mercury Outboard Engine Speed

The table below shows the optimal operating speed, known as the optimal operating range of your Mercury outboard engine.

OPTIMAL SPEED MERCURY OUTBOARD ENGINE

Engine power

Optimal full throttle rpm (min-max)

Drive ratio

2.5 HP

4000-5000

1.85

3.3 HP

4500-5500

2.15

4 HP

4500-5500

2.15

4 4T HP

4500-5500

2.15

5 HP

4000-5000

2.15

5 4T HP

4500-5500

2.15

6 HP

4000-5000

2

6 HP 4-Stroke

5000-6000

2.15

8 HP

4500-5500

2

9.9 HP

5000-6000

2

9.9 HP 4-Stroke

4500-5500

2.01

9.9 HP Big Foot

4500-5500

2.42

9.9 HP Saltwater

4500-5500

2.42

15 HP

5000-6000

2

15 HP 4-Stroke

4500-5500

2

15 HP Big Foot

4500-5500

2.42

20 HP

4500-5500

2.25

25 HP Classic

5000-6000

2.25

25 HP Big Foot

5500-6000

2.4

30 HP

4500-5500

2

30 HP 4-Stroke

5500-6000

2

40 HP Classic

4500-5500

2

40 HP Classic

5000-5500

1.83

40 HP 4-Stroke

5500-6000

2

40 HP Big Foot

5500-6000